# 找到篮球
name_list = [
    ['张三', '李四', '阿坤'],
    ['唱', '跳', '篮球'],
    ['甲', '乙', '丙']
]

"""找到甲"""
print(name_list[2][0])  # ['甲', '乙', '丙']   '甲'
print(name_list[-1][0])

li = [1, 2, 3, 4, 5, [5, 5, 5, 5, 5]]
print(li[-1].count(5))
